Everyone loves free stuff, right? Well, what’s not to love about getting free London travel on what is, officially, the worst day of the week — Monday. That’s exactly what a certain 'priceless' credit card company is offering for the next three weeks.

You’ll need two things to qualify for the offer: Firstly, an Apple Pay-compatible device — so that means an Apple iPhone 6, iPhone 6 Plus, iPhone 6s or iPhone 6s Plus in your pocket, or an Apple Watch on your wrist. Secondly — in a not-that-surprising twist, you’ll need a UK Masterc*rd in your wallet, and you’ll need to have enrolled it in Apple Pay.

Still with us? Then here’s the skinny on the terms and conditions:

The offer is valid on London buses, London Underground, London trams, Docklands Light Railway, London Overground, TfL Rail, Emirates Air Line, and most National Rail services (stations with contactless coverage).